1 files changed, 16 insertions, 0 deletions
diff --git a/boost/unordered/unordered_set_fwd.hpp b/boost/unordered/unordered_set_fwd.hpp
index f19c137d74..0c8b6d8d63 100644
--- a/boost/unordered/unordered_set_fwd.hpp
+++ b/boost/unordered/unordered_set_fwd.hpp
@@ -10,12 +10,22 @@
 # pragma once
 #endif
 
+#include <boost/config.hpp>
+#include <memory>
+#include <functional>
+#include <boost/functional/hash_fwd.hpp>
 #include <boost/unordered/detail/fwd.hpp>
 
 namespace boost
 {
     namespace unordered
     {
+        template <class T,
+            class H = boost::hash<T>,
+            class P = std::equal_to<T>,
+            class A = std::allocator<T> >
+        class unordered_set;
+
         template <class T, class H, class P, class A>
         inline bool operator==(unordered_set<T, H, P, A> const&,
             unordered_set<T, H, P, A> const&);
@@ -26,6 +36,12 @@ namespace boost
         inline void swap(unordered_set<T, H, P, A> &m1,
                 unordered_set<T, H, P, A> &m2);
 
+        template <class T,
+            class H = boost::hash<T>,
+            class P = std::equal_to<T>,
+            class A = std::allocator<T> >
+        class unordered_multiset;
+
         template <class T, class H, class P, class A>
         inline bool operator==(unordered_multiset<T, H, P, A> const&,
             unordered_multiset<T, H, P, A> const&);